Switch to installing vsce in github actions (#167)

Author: kddejong

.github/workflows/publish.yaml

@@ -17,9 +17,10 @@ jobs:
     - name: Setup NPM
       run: |
         npm install
+        npm install -g vsce
         npm run compile
     - name: Publish
       if: success()
-      run: npm run deploy
+      run: vsce publish
       env:
         VSCE_PAT: ${{ secrets.VSCE_PAT }}